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Copy file name to clipboardExpand all lines: pages/kubernetes/reference-content/introduction-to-kubernetes.mdx
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@@ -119,10 +119,10 @@ A **service** is an abstraction which defines a logical group of Pods that perfo
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By default, services are only available using internally routable IP addresses, but can be exposed publicly.
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It can be done either by using the `NodePort` configuration, which works by opening a static port on each node's external networking interface. Otherwise, it is possible to use the `LoadBalancer` service, which creates an Scaleway Load Balancer using Kubernetes load-balancer integration, provided by the CCM.
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It can be done either by using the `NodePort` configuration, which works by opening a static port on each node's external networking interface, or the `LoadBalancer` service, which creates a Scaleway Load Balancer using the Kubernetes load-balancer integration, provided by the CCM.
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<Messagetype="note">
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To use `NodePort` with Kubernetes Kapsule or Kosmos, security groups for Scaleway Instances must be configured to allow external connections to the exposed ports of the nodes.
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To use `NodePort` with Kubernetes Kapsule or Kosmos, you must configure security groups for Scaleway Instances to allow external connections to the exposed ports of the nodes.
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</Message>
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### ReplicaSet
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### Deployments
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A `Deployment` in Kubernetes provides declarative updates for applications. It manages `ReplicaSets`, which in turn manage the actual Pods.
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A `Deployment` in Kubernetes provides declarative updates for applications. It manages `ReplicaSets`, which in turn manage the actual pods.
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The deployment controller continuously ensures that the desired number of Pod replicas are running. If Pods fail, become unresponsive, or are deleted, it automatically creates replacements to match the desired state. Deployments also support rolling updates and rollbacks, making them the standard way to manage stateless applications.
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The deployment controller continuously ensures that the desired number of pod replicas are running. If pods fail, become unresponsive, or are deleted, it automatically creates replacements to match the desired state. Deployments also support rolling updates and rollbacks, making them the standard way to manage stateless applications.
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### StatefulSets
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A `StatefulSet` manages Pods in a similar way to a Deployment, but with one crucial difference: each Pod has a **persistent identity** and is **not interchangeable**. Pods are created from the same specification, yet each one gets a unique, ordinal-based name that persists even if the Pod is rescheduled to a different node.
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A `StatefulSet` manages pods in a similar way to a deployment, but with one crucial difference: each pod has a **persistent identity** and is **not interchangeable**. Pods are created from the same specification, yet each one gets a unique, ordinal-based name that persists even if the pod is rescheduled to a different node.
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Like other controllers, the StatefulSet controller continuously reconciles the cluster’s actual state with the desired state defined in the StatefulSet object.
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Because Pods are treated as unique, each can be associated with its own dedicated storage volume. This makes StatefulSets the preferred choice for workloads that require **stable network identities, persistent storage, and ordered deployment or scaling** — such as databases and distributed systems.
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Because pods are treated as unique, each can be associated with its own dedicated storage volume. This makes StatefulSets the preferred choice for workloads that require **stable network identities, persistent storage, and ordered deployment or scaling**, such as databases and distributed systems.
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